Vulnerability · Published Oct 29, 2025 · Assigned by GitHub_M
CVE-2025-64102Zitadel allows brute-forcing authentication factors
High 7.7
In plain English
A high-severity security flaw in zitadel from zitadel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Zitadel is open-source identity infrastructure software. Prior to 4.6.0, 3.4.3, and 2.71.18, an attacker can perform an online brute-force attack on OTP, TOTP, and passwords. While Zitadel allows preventing online brute force attacks in scenarios like TOTP, Email OTP, or passwords using a lockout mechanism. The mechanism is not enabled by default and can cause a denial of service for the corresponding user if enabled. Additionally, the mitigation strategies were not fully implemented in the more recent resource-based APIs. This vulnerability is fixed in 4.6.0, 3.4.3, and 2.71.18.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/zitadel/zitadel | 1.80.0-v2.20.0.20251029090735-b8db8cdf9cc8 | GHSA-xrw9-r35x-x878 |
| Go | github.com/zitadel/zitadel | no fix listed | GO-2025-4085 |
| Go | github.com/zitadel/zitadel/v2 | 2.71.18 | GHSA-xrw9-r35x-x878 |
Affected products (as reported)
Weakness: CWE-307 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N